13431757 has 2 divisors, whose sum is σ = 13431758. Its totient is φ = 13431756.

The previous prime is 13431739. The next prime is 13431767. The reversal of 13431757 is 75713431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6728836 + 6702921 = 2594^2 + 2589^2 .

It is an emirp because it is prime and its reverse (75713431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13431757 - 2¹¹ = 13429709 is a prime.

It is a super-2 number, since 2×13431757² = 360824192214098, which contains 22 as substring.

It is equal to p₈₇₅₅₀₆ and since 13431757 and 875506 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715878 + 6715879.

It is an arithmetic number, because the mean of its divisors is an integer number (6715879).

Almost surely, 2^13431757 is an apocalyptic number.

It is an amenable number.

13431757 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431757 is an equidigital number, since it uses as much as digits as its factorization.

13431757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 13431757 is about 3664.9361522406. The cubic root of 13431757 is about 237.7082612765.

The spelling of 13431757 in words is "thirteen million, four hundred thirty-one thousand, seven hundred fifty-seven".